Re: [net-next PATCH v4 3/3] net: reserve ports for applicationsusing fixed port numbers

From: Eric Dumazet
Date: Wed Feb 17 2010 - 11:39:43 EST


Le jeudi 18 fÃvrier 2010 Ã 00:13 +0800, Cong Wang a Ãcrit :

> I don't think so, if you want to avoid race condition, you just need to
> write the reserved ports before any networking application starts, IOW,
> as early as possible during boot.
>

Sure, but I was thinking retrieving the list of reserved port by a
database query, using network :)

Anyway, I just feel your argument is not applicable.

Our kernel is capable of doing an intersection for us, we dont need
to forbid user to mark a port as 'reserved' if this port is already
blacklisted by another mechanism (for example, if this port is already
in use)



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